These exercises helps you visualize a sequence of moves. You're shown a board position and then told the
sequence of white and black moves. At the end of the move sequence, you will update the board to match the now current position. You can also follow the moves of an entire game with stops along the way to update the position
or work with a specific set of pieces and follow their random movements.

The "Who's Guarding Whom" exercise was designed by a Russian coach to get students to visualize how piece interact with each other over a move sequence.

The webpages are as follows:

Move Options - Specify the number of pieces in the initial position and how many moves
you want to try and keep in your head

Move Set - Follow the moves starting with a position containing a specified number of pieces

Entire Game - Follow the moves of a game starting at move 1

Specific Piece Options - Specify the set of pieces you want to work with
and the number of moves

Specific Pieces - Follow the random movements of a specific set of pieces

Who's Guarding Whom - Visualization exercise where you have to keep track of 4 pieces and how they interact with each other as moves are made